_wweUtilClass = function() {
   var ua = navigator.userAgent.toLowerCase(); 
   var av = navigator.appVersion.toLowerCase(); 
   this.minorVer = parseFloat(av); 
   this.majorVer = parseInt(this.minorVer); 
   this.is_opera = (ua.indexOf("opera") !=- 1); 
   this.is_mac = (ua.indexOf("mac") !=- 1); 
   this.is_ff = (ua.indexOf("firefox") !=- 1); 
   var iePos = av.indexOf('msie'); 
   if(iePos !=- 1) {
      if(this.is_mac) {
         var iePos = ua.indexOf('msie'); 
         this.minorVer = parseFloat(ua.substring(iePos + 5, ua.indexOf(';', iePos))); 
         }
      else {
         this.minorVer = parseFloat(av.substring(iePos + 5, av.indexOf(';', iePos))); 
         }
      this.majorVer = parseInt(this.minorVer); 
      }
   this.is_ie = ((iePos !=- 1) && (!this.is_opera)); 
   this.is_ie3 = (this.is_ie && (this.majorVer < 4)); 
   this.is_ie4 = (this.is_ie && this.majorVer == 4); 
   this.is_ie4up = (this.is_ie && this.minorVer >= 4); 
   this.is_ie5 = (this.is_ie && this.majorVer == 5); 
   this.is_ie5up = (this.is_ie && this.minorVer >= 5); 
   this.is_ie5_5 = (this.is_ie && (ua.indexOf("msie 5.5") !=- 1)); 
   this.is_ie5_5up = (this.is_ie && this.minorVer >= 5.5); 
   this.is_ie6 = (this.is_ie && this.majorVer == 6); 
   this.is_ie6up = (this.is_ie && this.minorVer >= 6); 
   this.is_ie7 = (this.is_ie && this.majorVer == 7); 
   this.is_ie7up = (this.is_ie && this.minorVer >= 7); 
   this.is_webtv = (ua.indexOf("webtv") !=- 1); 
   this.is_msn = (av.indexOf("msn") >= 0); 
   this.is_win = ((ua.indexOf("win") !=- 1) || (ua.indexOf("16bit") !=- 1)); 
   this.is_mac = (ua.indexOf("mac") !=- 1); 
   if(this.is_mac) {
      this.is_win =!this.is_mac; 
      }
   if(this.is_ff) {
      this.ffPos = ua.indexOf("firefox"); 
      if(ua.length > this.ffPos + 8) {
         this.majorVer = parseInt(ua.substring(this.ffPos + 8)); 
         }
      if(ua.length > this.ffPos + 10) {
         this.minorVer = parseInt(ua.substring(this.ffPos + 10)); 
         }
      this.is_ff1_5up = (this.is_ff && ((this.majorVer >= 1 && this.minorVer >= 5) || (this.majorVer >= 2))); 
      }
   }
var _wweUtils = new _wweUtilClass();